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Item COMPARISON AMONG EIGHT ADVANCED POPULATIONS FOR YIELD AND YIELD CONTRIBUTING TRAITS OF Brassica rapa L.(DEPARTMENT OF GENETICS AND PLANT BREEDING, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA-1207, 2018-06) ULLAH, AHMADThe research was based on the evaluation of eight advanced populations of Brassica rapa L. received from the Department of Genetics and Plant Breeding, Sher-e-Bangla Agricultural University, Dhaka, considering 10 yields and yield contributing traits, using randomized complete block designItem GENETIC STUDY ON YIELD AND QUALITY TRAITS OF ADVANCED BREEDING POPULATIONS IN Brassica rapa L.(DEPARTMENT OF GENETICS AND PLANT BREEDING, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA-1207, 2018-06) KARMOKAR, DEBOSREEThe experiment was conducted with 13 advanced breeding populations of Brassica rapa L. during rabi season from November 2017 to February 2018 in research farm of Sher-e-Bangla Agricultural University to evaluate morphological and biochemical traits of the selected populations. The analysis of variance showed significant variation in all the traits. High genotypic and phenotypic coefficient of variation was observed for the characters viz; number of secondary branches per plant, number of siliquae per plant and yield per plant. High heritability coupled with high genetic advance in percent of mean was found for days to 50% flowering, number of secondary branches per plant, siliqua per plant, number of seeds per siliqua and yield per plant. The correlation studies revealed that yield per plant had highly significant positive relation with number of primary branches per plant, secondary branches per plant and number of siliquae per plant at both genotypic and phenotypic level. Path analysis showed that siliquae per plant had highly significant and positive direct effect on the yield per plant. Biochemical analysis of various fatty acids of five populations was done. Among the populations lowest amount of palmitic, stearic and erucic acid was found in P7 (Tori-7 x BARI sarisha-15 F 6 ) (1.68%), P9 (BARI sarisha-9 X BARI sarisha-6 S 5 ) (0.49%) and P12 (SAU sarisha-1 X BARI sarisha-15 F 6 ) (54.08%) respectively. The highest amount of oleic, linoleic and linolenic acid was found in P12 (15.16%), P13 (BARI sarisha-6 X BARI sarisha-15 F 9 ) (14.27%) and P13 (8.65%) respectively. In case of short duration P1 (SAU sarisha-2 X BARI sarisha-15 F 7 ) (78.00 days) showed the best result. Higher yield per plant was found in P1 (7.31 g), P9 (6.53 g) and P12 (5.40 g) chronologically. Among the populations P1 was found as the best on the basis of days to 80% maturity, number of secondary branches per plant, number of siliquae per plant and yield per plant. Based on biochemical analysis for saturated fatty acids populations P7 and P9 were good. For unsaturated fatty acids population P12 was better enough than other populations. By comparing, it might be concluded that populations P1, P7, P9 and P12 had potential for improvement based on yield contributing traits and fatty acid content. F 15Item GENOTYPE AND ENVIRONMENT INTERACTIONS IN YIELD CONTRIBUTING CHARACTERS OF MUSTARD (Brassica rapa L.)(DEPARTMENT OF GENETICS AND PLANT BREEDING, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA-1207, 2018-06) MONDAL, SUSMITAThe experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University, Dhaka during October, 2017 to April, 2018. The objective of this study was to assess the genotype and environment interactions for yield and yield contributing characters of mustard varieties grown in Bangladesh through the AMMI (additive main effects and multiplicative interaction) model. The study comprised of eleven (11) mustard varieties of Brassica rapa released by BARI and BINA and three (3) environments laid out in randomized complete block (RCBD) design with three replications. The environments were three sowing times viz., optimum (Env-1), late (Env-2) and very late (Env-3) sowings of eleven mustard varieties. The results of combined analysis of variance (ANOVA) revealed significant differences between genotypes and environments as main effects. Genotype and environment interactions both linear and non-linear components were highly significant for most of the parameters except number of seeds per siliqua and hundred seed weight. The results also suggested that Env-3 was poor and Env-1 and Env-2 were found rich and favorable for mustard production. The IPCA1 (First Interaction Principal Component Axis) scores of a genotypes in the AMMI analysis used as an indication of the stability or adaptation over environments. The greater the IPCA1 scores indicated the better adaptation of a genotype to certain environments. Hence, considering the IPCA1 scores BARI Sharisha-9, BARI Sharisha-15, Maghi and Improved Tori were low yielding and unstable, while BARI Sharisha-6, BARI Sharisha-17 and BINA Sharisha-9 were shown high yielding but unstable genotypes. Again, Env-1 was found as rich environment where, BARI Sharisha-17, BINA Sharisha-9 were shown highly responsive to the environment (Env-1). BARI Sharisha-12 was found intermediate yielding and stable variety. As a whole, Sonali Sharisha-75 and BINA Sharisha-10 were found as high yielding and stable varieties and Env-1 and Env-2 were more favorable for the mustard production.